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公开(公告)号：US11882361B2
公开(公告)日：2024-01-23
申请号：US17455862
申请日：2021-11-19
发明人： Quang Le , Rajeev Nagabhirava , Kuok San Ho , Zhigang Bai , Zhanjie Li , Xiaoyong Liu , Daniele Mauri
CPC分类号： H04N23/687 , G03B3/10 , G03B13/36 , H04N23/55 , H04N23/57 , G03B2205/0023 , G03B2205/0069
摘要： Aspects of the present disclosure generally relate to optical devices and related methods that facilitate tilt in camera systems, such as tilt of a lens. In one example, an optical device includes a lens, an image sensor disposed below the lens, a plurality of magnets disposed about the lens, and a plurality of: (1) vertical coil structures coiled in one or more vertical planes and (2) horizontal coil structures coiled in one or more horizontal planes. When power is applied, the coil structures can generate magnetic fields that, in the presence of the magnets, cause relative movement of the coil structures and associated structures. The plurality of vertical coil structures are configured to horizontally move the lens. The plurality of horizontal coil structures are configured to tilt the lens when differing electrical power is applied to at least two of the plurality of horizontal coil structures.
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公开(公告)号：US11514934B1
公开(公告)日：2022-11-29
申请号：US17512216
申请日：2021-10-27
发明人： Ming Mao , Chen-Jung Chien , Daniele Mauri , Goncalo Marcos Baião De Albuquerque , Chih-Ching Hu , Anup Ghosh Roy , Yung-Hung Wang
摘要： The present disclosure generally relates to a dual free layer (DFL) two dimensional magnetic recording (TDMR) read head. The read head comprises a first sensor, a first rear hard bias (RHB) structure disposed adjacent to the first sensor, an upper shield disposed over the first sensor and first RHB structure, a lower shield disposed over the upper shield, a second sensor disposed over the lower shield, and a second RHB structure disposed adjacent to the second sensor. A first surface of the first sensor is substantially flush or aligned with a first surface of the first RHB structure. A first surface of the second sensor is substantially flush or aligned with a first surface of the second RHB structure. The upper shield extends linearly from a media facing surface into the read head. The first lower shield is over-milled a greater amount of time than the second lower shield.
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公开(公告)号：US11172131B1
公开(公告)日：2021-11-09
申请号：US16915739
申请日：2020-06-29
发明人： Quang Le , Rajeev Nagabhirava , Kuok San Ho , Zhigang Bai , Zhanjie Li , Xiaoyong Liu , Daniele Mauri
摘要： Aspects of the present disclosure generally relate to optical devices and related methods that facilitate tilt in camera systems, such as tilt of a lens. In one example, an optical device includes a lens, an image sensor disposed below the lens, a plurality of magnets disposed about the lens, and a plurality of: (1) vertical coil structures coiled in one or more vertical planes and (2) horizontal coil structures coiled in one or more horizontal planes. When power is applied, the coil structures can generate magnetic fields that, in the presence of the magnets, cause relative movement of the coil structures and associated structures. The plurality of vertical coil structures are configured to horizontally move the lens. The plurality of horizontal coil structures are configured to tilt the lens when differing electrical power is applied to at least two of the plurality of horizontal coil structures.
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公开(公告)号：US11598828B2
公开(公告)日：2023-03-07
申请号：US16730730
申请日：2019-12-30
发明人： Yuankai Zheng , Christian Kaiser , Zhitao Diao , Chih-Ching Hu , Chen-jung Chien , Yung-Hung Wang , Dujiang Wan , Ronghui Zhou , Ming Mao , Ming Jiang , Daniele Mauri
摘要： The present disclosure generally relates to a Wheatstone bridge array that has four resistors. Each resistor includes a plurality of TMR structures. Two resistors have identical TMR structures. The remaining two resistors also have identical TMR structures, though the TMR structures are different from the other two resistors. Additionally, the two resistors that have identical TMR structures have a different resistance area as compared to the remaining two resistors that have identical TMR structures. Therefore, the working bias field for the Wheatstone bridge array is non-zero.
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公开(公告)号：US11495252B2
公开(公告)日：2022-11-08
申请号：US17448166
申请日：2021-09-20
发明人： Yuankai Zheng , Ming Mao , Daniele Mauri , Chih-Ching Hu , Chen-Jung Chien
摘要： The present disclosure generally relates to a Wheatstone bridge array that has four resistors. Each resistor includes a plurality of TMR films. Each resistor has identical TMR films. The TMR films of two resistors have reference layers that have an antiparallel magnetic orientation relative to the TMR films of the other two resistors. To ensure the antiparallel magnetic orientation, the TMR films are all formed simultaneously and annealed in a magnetic field simultaneously. Thereafter, the TMR films of two resistors are annealed a second time in a magnetic field while the TMR films of the other two resistors are not annealed a second time.
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公开(公告)号：US11430470B2
公开(公告)日：2022-08-30
申请号：US17465455
申请日：2021-09-02
发明人： Xiaoyong Liu , Ji Li , Changhe Shang , Daniele Mauri , Yukimasa Okada
摘要： Aspects of the present disclosure generally relate to magnetic recording heads of magnetic recording devices. A magnetic read head includes a first pinning layer magnetically oriented in a first direction, and a second pinning layer formed above the first pinning layer and magnetically oriented in a second direction that is opposite of the first direction. The magnetic read head includes a rear hard bias disposed outwardly of one or more of the first pinning layer relative or the second pinning layer. The rear hard bias is magnetically oriented to generate a magnetic field in a bias direction. The bias direction points in the same direction as the first direction or the second direction. The magnetic read head does not include an antiferromagnetic (AFM) layer between a lower shield and an upper shield.
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公开(公告)号：US20210409602A1
公开(公告)日：2021-12-30
申请号：US16915742
申请日：2020-06-29
发明人： Quang Le , Rajeev Nagabhirava , Kuok San Ho , Zhigang Bai , Zhanjie Li , Xiaoyong Liu , Daniele Mauri
摘要： Aspects of the present disclosure generally relate to optical devices and related methods that facilitate tilt in camera systems, such as tilt of a lens. In one example, an optical device includes a lens, an image sensor disposed below the lens, a plurality of magnets disposed about the lens, and a plurality of: (1) vertical coil structures coiled in one or more vertical planes and (2) horizontal coil structures coiled in one or more horizontal planes. When power is applied, the coil structures can generate magnetic fields that, in the presence of the magnets, cause relative movement of the coil structures and associated structures. The plurality of vertical coil structures are configured to horizontally move the lens. The plurality of horizontal coil structures are configured to tilt the lens when differing electrical power is applied to at least two of the plurality of horizontal coil structures.
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公开(公告)号：US11170808B1
公开(公告)日：2021-11-09
申请号：US17149491
申请日：2021-01-14
IPC分类号： G11B5/39
摘要： The present disclosure generally relates to magnetic read heads comprising a dual free layer (DFL) structure. The magnetic read head comprises a first shield, a second shield, and a DFL structure disposed between the first and second shields. The DFL structure comprises a magnetic seed layer, a first free layer, and a second free layer. A non-magnetic spacer layer is disposed between and in contact with the first shield and the magnetic seed layer of the DFL structure at a media facing surface. A material and a thickness of the non-magnetic spacer layer is selected to control the coupling between the first shield and the magnetic seed layer of the DFL structure.
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公开(公告)号：US11127422B1
公开(公告)日：2021-09-21
申请号：US16918848
申请日：2020-07-01
发明人： Xiaoyong Liu , Ji Li , Changhe Shang , Daniele Mauri , Yukimasa Okada
摘要： Aspects of the present disclosure generally relate to magnetic recording heads of magnetic recording devices. A magnetic read head includes a first pinning layer magnetically oriented in a first direction, and a second pinning layer formed above the first pinning layer and magnetically oriented in a second direction that is opposite of the first direction. The magnetic read head includes a rear hard bias disposed outwardly of one or more of the first pinning layer relative or the second pinning layer. The rear hard bias is magnetically oriented to generate a magnetic field in a bias direction. The bias direction points in the same direction as the first direction or the second direction. The magnetic read head does not include an antiferromagnetic (AFM) layer between a lower shield and an upper shield.
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公开(公告)号：US11087785B1
公开(公告)日：2021-08-10
申请号：US16915718
申请日：2020-06-29
发明人： Ming Mao , Daniele Mauri , Chen-Jung Chien , Guanxiong Li
摘要： The present disclosure generally related to read heads having dual free layer (DFL) sensors. The read head has a sensor disposed between two shields. The sensor is a DFL sensor and has a surface at the media facing surface (MFS). Behind the DFL sensor, and away from the MFS, is a rear hard bias (RHB) structure. The RHB structure is disposed between the shields as well. In between the DFL sensor and the RHB structure is insulating material. The RHB is disposed on the insulating material. The RHB includes a RHB seed layer as well as a RHB bulk layer. The RHB seed layer has a thickness of between 26 Angstroms and 35 Angstroms. The RHB seed layer ensures the read head has a strong RHB magnetic field that can be uniformly applied.
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